Abstract
Power-line communication (PLC) is a promising communication technology of constructing IoT (internet of things) systems, and it employs IEEE 1901 as its medium access control (MAC) protocol. Current studies about IEEE 1901 MAC performance analysis do not consider the influence of physical layer’s retransmission protocols, i.e., ARQ (automatic repeat request) and HARQ-CC (hybrid ARQ with chase combining). Moreover, how 1901 protocol affect the energy consumption in PLC networks, and whether 1901 protocol has bound performance are also unsolved in these existing works. Focusing on the above problems, we put forward a cross-layered theoretical model to insightfully analyze 1901 protocol, where the impacts of physical layer’s retransmission protocols (ARQ and HARQ-CC), channel fading modes and practical configurations (buffer size, finite traffic load, etc.) are comprehensively taken into consideration in the modeling process. On this basis, we derive the closed-form expressions of 1901 MAC metrics considering retransmission protocols. Furthermore, we construct an energy consumption model, and provide the bound performance analysis for 1901 protocol. Finally, we evaluate the performance of 1901 protocol under different retransmission protocols and system parameters, and verify the proposed cross-layered theoretical model.
Highlights
PLC (Power-line communication) network provides an attractive communication medium for home access networks and industrial IoT due to its low cost installations and broad coverage feature [1]–[4]
We propose a cross-layered theoretical model for IEEE 1901 protocol considering the impact of retransmission protocols
PERFORMANCE EVALUATION In this part, we evaluate the performance of IEEE 1901 under the influence of two retransmission protocols (ARQ and HARQ-CC), and verify the proposed cross-layered theoretical model
Summary
PLC (Power-line communication) network provides an attractive communication medium for home access networks and industrial IoT (internet of things) due to its low cost installations and broad coverage feature [1]–[4]. DRAWBACKS AND MOTIVATION Currently, some valuable studies have paid attention to performance analysis of 1901 protocol for PLC networks [14]–[22] All these works [14]–[22] do not consider the impact of physical layer’s retransmission protocols [23]–[30] on 1901’s MAC performance. Y. Zhang: Cross-Layered Theoretical Model of IEEE 1901 PLC Networks Considering Retransmission Protocols performance are neglected in the above works. It’s still challenging to propose an insightful theoretical framework, which can investigate the MAC performance of IEEE 1901 PLC networks under the influence of retransmission protocols, evaluate the energy consumption and analyze the bound performance of 1901 protocol. We propose a cross-layered theoretical model for IEEE 1901 protocol considering the impact of retransmission protocols. If the medium is sensed busy and the value of the deferral counter is 1 (i.e., sensing the medium busy dk +1 times), and it re-draws the backoff counter without attempting a transmission (if the station is already at the last backoff stage, it re-enters this stage) [20]
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